And a bit more research...
In the below URL, one of the responses details: 01 0C 00 04 00 07 06 31 05 03 0A 03 E8 20
Not sure what sensor they are using, but applying the logic as used by Everspring..
The Precision is 0A, which is for LUX and there must be a different value for Percentage.
03 * 256 + E8 (232) = 1000, which is shown in the output.
2014-03-30 16:30:57 DEBUG o.o.b.z.i.p.c.ZWaveMultiLevelSensorCommandClass[:92]- Received Sensor Multi Level Request for Node ID = 7
2014-03-30 16:30:57 DEBUG o.o.b.z.i.p.c.ZWaveMultiLevelSensorCommandClass[:127]- Sensor Multi Level report from nodeId = 7
2014-03-30 16:30:57 DEBUG o.o.b.z.i.p.c.ZWaveMultiLevelSensorCommandClass[:132]- Sensor Type = (0x03)
2014-03-30 16:30:57 DEBUG o.o.b.z.i.p.c.ZWaveMultiLevelSensorCommandClass[:147]- Sensor Value = (1000.000000)
https://groups.google.com/forum/#!msg/openhab/899g2eVIuGw/aec8PgxJNgIJ
There's some quite useful info in the Open-ZWave code:
http://code.google.com/p/open-zwave/source/browse/trunk/cpp/src/command_classes/SensorMultilevel.cpp?spec=svn602&r=602
